"The Salahis' testimony is important to explain how a couple circumvented layers of security at the White House on the evening of a state dinner without causing alarm," he said in a statement. "The committee is prepared to move forward with subpoenas to compel their appearance."

Meanwhile, the stonewalling at the White House continues. This morning senior aide Valerie Jarrett told ABC's "Good Morning America" that there is no reason for Rogers to testify.

It took several days before the White House acknowledged any responsibility for the breach, when Deputy Chief of Staff Jim Messinaposted this statement on whitehouse.gov: "After reviewing our actions, it is clear that the White House did not do everything we could have done to assist the United States Secret Service in ensuring that only invited guests enter the complex."

According to Jarrett, that not only covers any questions Congress might have but also meets Obama's promise for transparency.